import requests

picture = {"https://www.sanchuangedu.cn/wgyc.png","https://www.sanchuangedu.cn/luogan.png","https://www.sanchuangedu.cn/xiayuzhen.jpg"}

result = requests.get("https://www.sanchuangedu.cn/wgyc.png")
with open("作业.jpg", "wb") as fp:
    fp.write(result.content)

result = requests.get("https://www.sanchuangedu.cn/luogan.png")
with open("作业2.jpg", "wb") as fp:
    fp.write(result.content)

result = requests.get("https://www.sanchuangedu.cn/xiayuzhen.jpg")
with open("作业3.jpg", "wb") as fp:
    fp.write(result.content)